secwatch.observer — SEC 8-K summary ====================================== Issuer: i-80 Gold Corp. (IAUX) CIK: 0001853962 Form: 8-K Filed at: 2025-12-29T23:59:59+00:00 Accession: 0001193125-25-335368 Event type: other_material Sentiment: positive Materiality: 0.75 Item codes: 7.01, 8.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 i-80 Gold updates Lone Tree Plant refurbishment: $430M capex, 12-24 month payback, commissioning Q4 2027 -------------------------------------------------------------------------------- - Capital cost estimate $430M ($412M plus $18M spares); AACE Class 3; slightly above ~$400M due to inflation and expanded tailings filtration. - Expected payback 12-24 months depending on grade and gold price; owner-operator processing reduces costs to ~1/3 of toll-milling. - Margin increase estimated at $1,000-$1,500/oz; commissioning targeted for Q4 2027; construction decision after recapitalization. - Permit applications due Q1 2026; demolition Q2 2026; construction H2 2026; recapitalization expected by end of Q2 2026. - Plant to serve as central hub for Granite Creek, Archimedes, and Cove mines; nameplate 2,268 tpd / 827,806 tpa. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1853962/000119312525335368/0001193125-25-335368-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1853962/000119312525335368/d34783d8k.htm HTML page: https://secwatch.observer/filing/0001193125-25-335368 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer